[Filter Grade: KF94] [Color: White] [Q'ty: 30 pcs/inbox] - 3-Steps Folding 3-D Structure. - 4 Ply (Outer, Supportive Filter(DuPont), MB Filter, Inner layers) Filtration Structure blocks 94% of harmful matters such as viral, bacterial, and micro-dust (avg. size of 0.4ã??). - All components (materials) are trust-worthy made in Korea. - Much Softer inner layer, skin-friendly hypoallergenic and specializing in excretion of moisture, compared to competitive masks is safe to use on sensitive skin and long-term wearing. - Soft & Elastic Earband provides comforts and perfect fit. - Registered goods on Ministry of Food & Drug Safety in Korea, CE (Europe), and FDA (US).